There was an error published in J. Exp. Biol. 214, 3630-3638.

The affiliation for Xavier Bellés was inadvertently missing from the author list. It should have read:

1Institut de Biologia Evolutiva (CSIC-UPF) and LINC-Global, Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain We apologise to authors and readers for any inconvenience this error may have caused.